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110 problems

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Counting Array1,212 Hash Table473 String437 Math331 Greedy330 Dynamic Programming327 Sorting302 Depth-First Search208 Binary Search189 Breadth-First Search166 Matrix163 Tree158 Prefix Sum155 Two Pointers150 Database137 All topics

Medium · 110 results

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TitleSolutionAcceptDifficultyTopics

2364. Count Number of Bad PairsVideo

Solution54.2%Medium

Array, Counting +2· 4 companies

2384. Largest Palindromic NumberVideo

Solution37.1%Medium

Counting, Greedy +2· 3 companies

2442. Count Number of Distinct Integers After Reverse OperationsVideo

Solution81.4%Medium

Array, Counting +2· 1 company

2453. Destroy Sequential TargetsVideo

Solution42.4%Medium

Array, Counting +1· 1 company

2526. Find Consecutive Integers from a Data StreamVideo

Solution51.5%Medium

Counting, Data Stream +3· 1 company

2531. Make Number of Distinct Characters EqualVideo

Solution27.5%Medium

Counting, Hash Table +1· 1 company

2539. Count the Number of Good SubsequencesVideoPremium

Solution47.7%Medium

Combinatorics, Counting +3· 4 companies

2782. Number of Unique CategoriesPremium

Solution83.8%Medium

Counting, Interactive +1· 1 company

2856. Minimum Array Length After Pair RemovalsVideo

Solution27.8%Medium

Array, Binary Search +4· 1 company

2870. Minimum Number of Operations to Make Array EmptyVideo

Solution61.9%Medium

Array, Counting +2· 2 companies

2950. Number of Divisible SubstringsVideoPremium

Solution74.6%Medium

Counting, Hash Table +2· 4 companies

2955. Number of Same-End SubstringsVideoPremium

Solution60.6%Medium

Array, Counting +3· 2 companies

2981. Find Longest Special Substring That Occurs Thrice IVideo

Solution61.9%Medium

Binary Search, Counting +3· 3 companies

2982. Find Longest Special Substring That Occurs Thrice IIVideo

Solution39.2%Medium

Binary Search, Counting +3· 2 companies

3016. Minimum Number of Pushes to Type Word IIVideo

Solution83.2%Medium

Counting, Greedy +3· 3 companies

3035. Maximum Palindromes After OperationsVideo

Solution47.2%Medium

Array, Counting +4· 8 companies

3039. Apply Operations to Make String EmptyVideo

Solution57.5%Medium

Array, Counting +2· 1 company

3044. Most Frequent PrimeVideo

Solution45.5%Medium

Array, Counting +5· 1 company

3071. Minimum Operations to Write the Letter Y on a GridVideo

Solution63.9%Medium

Array, Counting +2· 7 companies

3081. Replace Question Marks in String to Minimize Its ValueVideo

Solution29.6%Medium

Counting, Greedy +4· 1 company

3084. Count Substrings Starting and Ending with Given CharacterVideo

Solution50.5%Medium

Counting, Math +1

3085. Minimum Deletions to Make String K-SpecialVideo

Solution67.2%Medium

Counting, Greedy +3· 3 companies

3128. Right TrianglesVideo

Solution48.5%Medium

Array, Combinatorics +3· 2 companies

3137. Minimum Number of Operations to Make Word K-PeriodicVideo

Solution59.9%Medium

Counting, Hash Table +1· 2 companies

3138. Minimum Length of Anagram ConcatenationVideo

Solution39.8%Medium

Counting, Hash Table +1· 2 companies

3144. Minimum Substring Partition of Equal Character FrequencyVideo

Solution40.5%Medium

Counting, Dynamic Programming +2· 4 companies

3153. Sum of Digit Differences of All PairsVideo

Solution43.3%Medium

Array, Counting +2· 2 companies

3167. Better Compression of StringVideoPremium

Solution75.3%Medium

Counting, Hash Table +2· 2 companies

3185. Count Pairs That Form a Complete Day IIVideo

Solution43.7%Medium

Array, Counting +1· 1 company

3186. Maximum Total Damage With Spell CastingVideo

Solution45.1%Medium

Array, Binary Search +5· 7 companies

3223. Minimum Length of String After OperationsVideo

Solution75.0%Medium

Counting, Hash Table +1· 3 companies

3228. Maximum Number of Operations to Move Ones to the EndVideo

Solution67.2%Medium

Counting, Greedy +1· 4 companies

3265. Count Almost Equal Pairs IVideo

Solution38.3%Medium

Array, Counting +3· 1 company

3335. Total Characters in String After Transformations IVideo

Solution45.7%Medium

Counting, Dynamic Programming +3· 4 companies

3371. Identify the Largest Outlier in an ArrayVideo

Solution36.2%Medium

Array, Counting +2· 4 companies

3443. Maximum Manhattan Distance After K ChangesVideo

Solution54.2%Medium

Counting, Hash Table +2· 4 companies

3527. Find the Most Common ResponseVideo

Solution74.0%Medium

Array, Counting +2· 1 company

3583. Count Special TripletsVideo

Solution47.1%Medium

Array, Counting +1· 3 companies

3659. Partition Array Into K-Distinct GroupsVideo

Solution47.1%Medium

Array, Counting +1· 1 company

3664. Two-Letter Card GameVideo

–13.0%Medium

Array, Counting +3· 2 companies

3672. Sum of Weighted Modes in SubarraysPremium

Solution54.3%Medium

Array, Counting +3

3679. Minimum Discards to Balance InventoryVideo

Solution35.5%Medium

Array, Counting +3

3713. Longest Balanced Substring IVideo

Solution69.1%Medium

Counting, Enumeration +2· 4 companies

3720. Lexicographically Smallest Permutation Greater Than TargetVideo

Solution48.2%Medium

Counting, Enumeration +3· 2 companies

3737. Count Subarrays With Majority Element IVideo

Solution75.7%Medium

Array, Counting +5· 5 companies

3746. Minimum String Length After Balanced RemovalsVideo

Solution77.6%Medium

Counting, Stack +1

3773. Maximum Number of Equal Length RunsPremium

Solution82.8%Medium

Counting, Hash Table +1

3805. Count Caesar Cipher PairsVideo

Solution50.7%Medium

Array, Counting +3· 1 company

3837. Delayed Count of Equal ElementsPremium

Solution77.7%Medium

Array, Counting +1· 1 company

3839. Number of Prefix Connected GroupsVideo

Solution59.9%Medium

Array, Counting +2

Showing 51–100 of 110